Free Questions and Answers for All Medical Students all over the World
Q- A 55-year-old man presents with hematuria. Cystoscopy shows a papillary growth in the bladder. Histology reveals malignant transitional cells. Which of the following is the most significant risk factor for this condition? A- Chronic cystitis B- Cigarette smoking C- Cyclophosphamide therapy D- Schistosoma haematobium infection Q- A 65-year-old man presents with progressive dyspnea … Read more
Q- Topical benzocaine overuse can cause sudden cyanosis with normal PaO₂. Which one of the following substances can reverse this reaction? A- Atropine B- Methylene blue C- Naloxone D- Sodium bicarbonate Q- A 32-year-old woman with a history of migraines is prescribed sumatriptan. What is its mechanism of action? A- 5-HT1B/1D receptor agonist B- … Read more
Q- A 25-year-old woman presents with a sudden-onset severe headache, photophobia, and neck stiffness. She has a fever of 38.9°C (102°F). Lumber puncture shows: Opening pressure: 280 mm H₂O WBC count: 2200/mm³ (90% neutrophils) Protein: 220 mg/dL Glucose: 30 mg/dL Which of the following is the most likely diagnosis? A- Bacterial meningitis B- Fungal meningitis … Read more
Q- A 64-year-old man with atrial fibrillation is started on warfarin therapy. After 3 days, he develops skin necrosis. Which of the following best explains this complication? A- Direct inhibition of thrombin B- Immediate depletion of clotting factors II, VII, IX, X C- Rapid decline in protein C leading to transient hypercoagulability D- Vitamin K … Read more
Q- A 55-year-old man with a long history of alcohol use presents with abdominal distension. Physical exam reveals shifting dullness and spider angiomas on the chest. His lab results are: total bilirubin 3.2 mg/dL, albumin 2.1 g/dL, and an INR of 1.9. Which of the following best explains the pathophysiology of his condition? A- Autoimmune … Read more
Q- A 72-year-old man with chronic obstructive pulmonary disease (COPD) presents with worsening dyspnea and cough producing purulent sputum. His O₂ saturation is 85% on room air. Which of the following is the best initial treatment? A- Oral prednisone and broad-spectrum antibiotics B- Oxygen to maintain SpO₂ between 88% and 92% C- Immediate intubation and … Read more